By trading prospect Brett Wallace just months after getting him from the Cardinals for Matt Holliday the A’s showed that they don’t think he’ll be able to stick at third base defensively and apparently his new team agrees.
Wallace was taken in the first round of the 2008 draft as a third baseman and has played the position in 165 of his 192 games in the minors, but Blue Jays general manager Alex Anthopoulos made it clear in an MLB.com chat with fans over the weekend that he’ll be shifted to first base full time in 2010:

We think Wallace is capable of playing third. But, we see him being an above average defensive first baseman. Our hope is to have as strong as a defensive club as we can and putting players in a position where they have a chance to impact the club in the best way defensively.

In other words, maybe Wallace could be passable at third base, but the Blue Jays aren’t interested in that as a best-case scenario and mostly just want his bat in the lineup without his glove hurting them. Wallace will likely begin the year at Triple-A after Toronto got him in a straight-up swap with Oakland for fellow prospect Michael Taylor, but that could change if the Blue Jays clear first base for him by trading Lyle Overbay.

Buchholz, 33, was acquired by the Phillies from the Red Sox in December 2016, but he made only two starts before an MRI revealed he had a partial tear of his right flexor pronator mass. He underwent surgery in April and missed the rest of the season.